Superconducting flux pumps
Superconducting flux pumps
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DOI：
10.1063/1.5098384
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发表时间：
2019-06-21
影响因子：
3.2
通讯作者：
Coombs, T. A.
中科院分区：
文献类型：
--
作者：
Coombs, T. A.
本文对流量泵的发展前景进行了展望。磁通泵是一种向线圈或磁体提供电流的方法，无需直接电气或物理接触。通常情况下，线圈将使用电流引线直接充电，如果磁体以持续模式运行(如磁共振成像)，则电流引线将被撤回，或者如果磁场需要维护或倾斜，则将其留在原地。流量泵采用磁感应原理。它们有两个明显的优势。第一，没有与外部世界的直接连接，因此没有相关的热量损失。第二种是，虽然可以在磁铁或线圈中产生大电流，但这些电流可以在不需要大电流电源的情况下产生，而大电流电源又大又贵。磁通泵特别适用于由高温超导体(HTS)建造的机器。它们有助于充分利用HTS的载流能力，既便宜又简单，从而实现了更小、更轻、更强大的磁铁、电机和发电机。
This paper presents a perspective on flux pumps. Flux pumps are a means of providing current to a coil or a magnet without direct electrical or physical contact. Typically, a coil would be charged directly using current leads, which would then be withdrawn if the magnets operated in the persistent mode (as with magnetic resonance imaging) or left in place if the field required maintenance or ramping. Flux pumps use the principle of magnetic induction. They present two distinct advantages. The first is that there is no direct connection to the external world and, therefore, no associated heat loss. The second is that, although high current can be developed in the magnet or the coil, these can be produced without the need for high-current power supplies, which are bulky and expensive. Flux pumps are especially appropriate for machines constructed from high temperature superconductors (HTSs). They facilitate the full use of the HTS's current carrying capability, cheaply and simply, enabling smaller, lighter, and more powerful magnets, motors, and generators.